我们在解一些涉及物理图象的习题时，能否看懂题给图象所反映的物理内容，是解决问题的关键．对于图象，一般应从六个方面对它进行研读．下面从一道例题入手，具体谈谈研读图象的方法．例　以额定功率匀速行驶的甲车关闭发图１动机时，与甲车完全相同的乙车恰好起动，以后两车? When we are solving some exercises involving physical images, we can see whether or not the physical contents of the questions are reflected in the images. This is the key to solving the problem. For images, it should generally be studied from six aspects. Let’s start with an example and talk specifically about how to read the image. For example, if the A-vehicle with constant power at a rated power is turned off and the vehicle of Fig. 1 is motivated, the B-vehicle exactly the same as the A-vehicle will be started.